Unit 6 โ Work & Energy
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Unit 6 โ Work & Energy
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Question 1 of 11
1. Question
The work done will be zero when the angle between the force and the distance is
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Question 2 of 11
2. Question
If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be
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Question 3 of 11
3. Question
If the velocity of a body becomes double, then its kinetic energy will
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Question 4 of 11
4. Question
The work done in lifting a brick of mass 2 kg through a height of 5 m above ground will be
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Question 5 of 11
5. Question
The kinetic energy of a body of mass 2 kg is 25 J. Its speed is
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Question 6 of 11
6. Question
Which one of the following converts light energy into electrical energy?
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Question 7 of 11
7. Question
When a body is lifted through a height h, the work done on it appears in the form of its:
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Question 8 of 11
8. Question
The energy stored in coal is
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Question 9 of 11
9. Question
The energy stored in a dam is
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Question 10 of 11
10. Question
In Einstein’s mass-energy equation, c is the
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Question 11 of 11
11. Question
Rate of doing work is called
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